Adolescence is a phase of biological transformations, where different factors can influence the development of adolescents. The objective was to evaluate the sex influence of householder on the determinants of access to assets and services and insecurity situation of rural families of adolescents. This is a cross-sectional study carried out in rural households in Viçosa, Brazil. A questionnaire was used to collect information regarding access to assets and services (type of water supply and treatment, sewage and waste disposal); number of residents at home; and evaluation of food insecurity by the Brazilian Scale of Food Insecurity Statistical analyzes were conducted using the Pearson's Chi-square test and Spearman's correlation. The project was approved by the Human Research Ethics Committee of the Federal University of Viçosa. Sixty-six adolescents with a mean age of 16 years (sp ± 2.57) were evaluated, being 55.0% male. Food insecurity was present in 53.3%. There was an association between the sex of the reference dweller (female) and type of water supply - source or cistern (p =0.001), water treatment (p =0.034), garbage collection (p <0.001), food insecurity 0.011). There was a correlation between number of residents and EBIA score (r =0.456, p<0.001). It was concluded that the gender of the reference dweller influenced the determinants of access to assets and services and the food and nutrition insecurity situation of the adolescents' families.  (Acknowledgments: CAPES, CNPq, FAPEMIG, PPGCN and PPG Agroecology).

SOCIAL WELFARE AND FOOD AND NUTRITIONAL INSECURITY OF RURAL FAMILIES OF ADOLESCENTS: AN ANALYSIS OF THE INFLUENCE OF THE SEX OF THE FAMILY CHIEF